In January this year Nintendo promised to release a significant patch that will improve overall performance of the Wii U. While the company itself is keeping quite as to when the patch will be released, earlier rumors and reports put the release sometime in late September this year.
Perhaps that’s why Nintendo is releasing minor updates now to get things ready for the big day. Today update 3.1.0 was released which allows players to now “regularly connect to the Internet when the Wii U is powered down to check for available SpotPass data or software and system updates.”
Nintendo also adds that “improvements to overall system stability and other minor adjustments have been made to enhance the user experience,” but does not detail the changes.
The last major update for the Wii U sped up the loading system menus; which previously were very sluggish.